Improvement in sawing-machines



@stent @Wim JOHN PQ SUM MERS7 ord TIFFIN.' OHIO.

Letters Patent No. 92,124, dated .Tune 29, 1 869.

IMPROVEMENT IN SAWINGj-MACHINES.

'lhe Schedule referred to n these Letters Patent and making pmt o( the salme.

To all whom 'trimm/concern ABe it known that I, J ons P. SUMMEns, of Tin, in the county of Seneca, and in the State of Ohio, have invented new and useful Improvements in Wood- Sawing' Machines; and do hereby declare that the following is a full, clear, and exact description'thereof, reference being had to the accompanying drawings, and to the letters of reference marked thereon.

The nature of' my invention consists in theconstruction and general arrangement of a wood-sawingmlachine, as more fully hereinafter set forth.

Figure lv represents a side eleva-tion of my machine.

Figure 2 is a plan view ofthe same.

Figure 3 is a View ofthe feed-gear.

Letter A represents the frame'of' my machine, which may be constructed of'any desired shape and size.

At one end of the frame, and placed at right angles with it, is the shaft B, by means ot' which the motion is communicated t0 the saw.

Upon the end of shaft is placed the crank-wheel C, to which the pitman D is pivoted.

This pitr'nanis formed of two parts', and is made to operate between the two guides lll.'

The two parts of the pitman are joined together by nxlans of a holt, which passes through a sleeve on the en l To the end of the jointed arm F is attached the sawblade.

The two guides E, between which the pitman plays, and which guide the saw, have one of their ends hinged on to the frameA, while the other ones are loose, so that they can 'be lowered or raised to any desired angle, by means of the lever G, which is attached to them.

Rising from the bed-frame, are two uprights, which serve to control and keep the guides in place. To the side of one ofthese uprights the lever G is pivoted, so that the saw can be raised high enough to come in Contact with the cross-piece which. connects the uprights, and secured there when it is eithernot wanted for use, or when it is desired to move the llog forward for another cut.

Across the two guides there are placed two metal plates, which are joinedV together by means of the bar H. To the pitman-armF there is attached a guide, I, which passes over and plays backward and forward upon this rod, thus keepingthe saw always in a straight line.

L, through which the feed-mechanism is operated.

This wheel gears in a second one, K, of similar form vand make, upon the end ofthe shalt M.

inthe centre, so that the log can be morey securely held in'place, and has its bearings upon a small frame, placed 'at right angles with the main one, as seen in lig'. 2.

" The operation of my machine is as follows:

The motive-power is applied to the shaft B, whereby the saw is set in motion. As soon as the log has been sawed in two, the lever G is drawn downward, the saw raised clear of the log, and yt-hen the spring N is depressed, whereby the wheels O and l are made to gear. This starts the rollerto revolving, whereby the log is moved vforyard, and, as soon as far enough, the spring is let go, and the saw again lowered for another cut. Y

Having thus described my invention,

XVhat I'clam, and desire to secure by Letters Patent, is v The arrangement, upon the frame A, of the shaft M, spring bearing N, pinions O P, wheels K L, jointed pitnian D, guides E E, bar H, slide I, and lever G, all constructedand operating substantially as and for the purposes set forth. Y v

In testimony that I claim the foregoing, I have here'- unto set my hand, this 23d day of March, 1869.

JOHN P.' SUMMERS.

' Witnesses: lsnAnn Loose, GEO. S. YINGLING.

Upon the shaft-B there is placed -the mitre-wheel i 

